Catalytic conversion of plastic wastes using cost-effective bauxite residue as catalyst into H2-rich syngas and magnetic nanocomposites for chrome(VI) detoxification

Xu, Didi; Yang, Siyuan; Su, Youfeng; Zhang, Shuping

doi:10.1016/j.jhazmat.2021.125289

Cited by 33 publications

(13 citation statements)

References 44 publications

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“…Interestingly, various carbon nanomaterialscontained composites being considered as by-products or industrial wastes are inevitably and largely being produced in daily industrial production, such as catalytic pyrolysis or reforming-involved industries. 17,18 The used catalysts in these industries are generally deactivated and poisoned by the damage of structure or the production of coke, which are difficult to recover and conduct to further reuse. Further analysis revealed that the coke that existed on the used catalysts is mainly composed of amorphous carbons and ordered structure carbons (carbon nanomaterials).…”

Section: Introductionmentioning

confidence: 99%

Carbon nanotubes/Al₂O₃ composite derived from catalytic reforming of the pyrolysis volatiles of the mixture of polyethylene and lignin for highly-efficient removal of Pb(ii)

et al. 2021

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Section: Introductionmentioning

confidence: 99%

Carbon nanotubes/Al₂O₃ composite derived from catalytic reforming of the pyrolysis volatiles of the mixture of polyethylene and lignin for highly-efficient removal of Pb(ii)

et al. 2021

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“…Extending the material cycle of mine wastes is important and is a key feature of technospheric mining [15]. Research and development of the valorisation and repurposing of mine wastes and other technospheric stocks have been gaining a lot of attention recently and several studies have already reported technologies and processes with great potentials [81].…”

Section: Mineral Recoverymentioning

confidence: 99%

“…Bauxite residue from aluminium processing can be used as an additive in cement, concrete, bricks, and geopolymer production [79]. Recent research showed that carbonate bauxite residue can be suitable as a filter to remove phosphorus from wastewater streams [19] and also as a catalyst [81]. Mine wastes have also found applications in geopolymer preparations.…”

Section: Mineral Recoverymentioning

confidence: 99%

Technospheric Mining of Mine Wastes: A Review of Applications and Challenges

Lim

Alorro

2021

Sustainable Chemistry

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The concept of mining or extracting valuable metals and minerals from technospheric stocks is referred to as technospheric mining. As potential secondary sources of valuable materials, mining these technospheric stocks can offer solutions to minimise the waste for final disposal and augment metals’ or minerals’ supply, and to abate environmental legacies brought by minerals’ extraction. Indeed, waste streams produced by the mining and mineral processing industry can cause long-term negative environmental legacies if not managed properly. There are thus strong incentives/drivers for the mining industry to recover and repurpose mine and mineral wastes since they contain valuable metals and materials that can generate different applications and new products. In this paper, technospheric mining of mine wastes and its application are reviewed, and the challenges that technospheric mining is facing as a newly suggested concept are presented. Unification of standards and policies on mine wastes and tailings as part of governance, along with the importance of research and development, data management, and effective communication between the industry and academia, are identified as necessary to progress technospheric mining to the next level. This review attempts to link technospheric mining to the promotion of environmental sustainability practices in the mining industry by incorporating green technology, sustainable chemistry, and eco-efficiency. We argue that developing environmentally friendly processes and green technology can ensure positive legacies from the mining industry. By presenting specific examples of the mine wastes, we show how the valuable metals or minerals they contain can be recovered using various metallurgical and mineral processing techniques to close the loop on waste in favour of a circular economy.

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“…The increasing number of consumer societies in all countries of the world causes an increase in the demand for single-use plastics and, therefore, results in formation of large amounts of plastic piles that need to be managed [1,2]. While worldwide plastic production has increased by 500 % over the past thirty years, plastic consumption has increased by 50 % in the last decade.…”

Section: Introductionmentioning

confidence: 99%

Effects of recycled PET and TEOA on performance characteristics of bitumen

2022

JCE

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In this study, the recycled PET is used in bitumen modification by applying a different process in order to eliminate the phase separation problem. For this purpose, modified bitumens are obtained by adding the triethanolamine (TEOA) chemical (wt. 2.5 %) and PET (wt. 2, 4, 6, 8, 10 %) to pure bitumen. The properties of modified bitumens are determined by chemical, physical, and rheological tests. According to the test results, bitumen reacts with PET, and 6 % PET ratio is a critical value. At this ratio, the resistance of bitumen to deformations at high and low temperatures increases significantly.

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Catalytic conversion of plastic wastes using cost-effective bauxite residue as catalyst into H2-rich syngas and magnetic nanocomposites for chrome(VI) detoxification

Cited by 33 publications

References 44 publications

Carbon nanotubes/Al₂O₃ composite derived from catalytic reforming of the pyrolysis volatiles of the mixture of polyethylene and lignin for highly-efficient removal of Pb(ii)

Carbon nanotubes/Al₂O₃ composite derived from catalytic reforming of the pyrolysis volatiles of the mixture of polyethylene and lignin for highly-efficient removal of Pb(ii)

Technospheric Mining of Mine Wastes: A Review of Applications and Challenges

Effects of recycled PET and TEOA on performance characteristics of bitumen

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Catalytic conversion of plastic wastes using cost-effective bauxite residue as catalyst into H2-rich syngas and magnetic nanocomposites for chrome(VI) detoxification

Cited by 33 publications

References 44 publications

Carbon nanotubes/Al2O3 composite derived from catalytic reforming of the pyrolysis volatiles of the mixture of polyethylene and lignin for highly-efficient removal of Pb(ii)

Carbon nanotubes/Al2O3 composite derived from catalytic reforming of the pyrolysis volatiles of the mixture of polyethylene and lignin for highly-efficient removal of Pb(ii)

Technospheric Mining of Mine Wastes: A Review of Applications and Challenges

Effects of recycled PET and TEOA on performance characteristics of bitumen

Contact Info

Product

Resources

About

Carbon nanotubes/Al₂O₃ composite derived from catalytic reforming of the pyrolysis volatiles of the mixture of polyethylene and lignin for highly-efficient removal of Pb(ii)

Carbon nanotubes/Al₂O₃ composite derived from catalytic reforming of the pyrolysis volatiles of the mixture of polyethylene and lignin for highly-efficient removal of Pb(ii)